Lubricating pump



J. R. HIGHER AND J. O. HESSLER.

LUBRICATING PUMP. APPLiCATION FILED Auexz, 1919. RENEWED JAN. 3, 1922.

1,408,470. Patented Mar- 7,1922.

3 SHEETS-SHEET I.

INVENTORfi R. W Zdbhn/ O. Haas-2m WKQATTORNEY J. R. HIGHER AND J. O. HESSLER.

LUBRICATING PUMP.

APPLICATION FlLED AUG.2. 1919. RENEWED JAN. 3. I922.

1,408,470. Patented Mar. 7, 1922.

3 SHEETSSHEET 2- INVENTORfi Jofigoh 6.

7- 6 812m 0. Hauler ATTORNEY Y APPUCATION FILED AUG JAN. 3,1922. v 1,408,470. Patented Mar. 7, 1922.

. 3 SHEETS-SHEET 3- a, powerful compact pump,

1 UNITED STATES PATENT- o FIc JOSEPH R. HIGHER AND JOHN 0. HESSLER, OF CHICAGO, ILLINOIS, ASSIGNORS TO STAR TOOL & MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LUBRICATING PUMP.

Specification of Letters Patent.

Application filed August 2, 1919, Serial No. 314,964. Renewed January 3, 1922. Serial No. 526,810.

To all whom it may concern;

Be it known that we, J OSEPH R. RIGHER, a citizen of the United States, and J OHN O. HnssLnR, also a citizen ofthe United States, both residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Lubricating Punips,of which the following is a full, clear, and exact description.

'Our invention relates to pumps and par ticularly tothe type used for lubricating and keeping the work of metal working machines cool and has the parts thereof, that are relied upon to expel the fluid, arranged around a rotary shaft.

,Heretofore the construction of pumps of this character has been such that small particles of foreign matter, such as metal and sawdust would get into the oil passing through the same and seriously interfere with, if not stop the action of the pump altogether. When this happened it was necessary to go to the expense of labor and loss of time to disassemble the pump and clean the parts thereof and then reassemble them.

The object of our invention is to provide which occupies a comparatively small space, which is absolutely dependable and will require a. minimum of power to operate it. Another object is to provide a pump the parts of which are yieldable and through which small particles of foreign matter can pass without interfering with its action.v These and other objects we accomplish by the means hereinafter fully described and as particularly pointed out in the claims.

In the drawings:

' Figure 1' is a longitudinal section taken on dotted line 1, 1, Fig. 2.

Figure 2 is an end View of our invention. Figure 3 is a transverse section, taken on dotted line 3, 3, Fig. 1.

Figure piston of our improved pump removed therefrom.

Figure 5 is an edge view of said piston.

Figure 6 is a detail view showing the annulus on which said piston is mounted in perspective.

Figure 7 is a side view of the supporting 4 is a side view of the eccentric block of said pump showing a portion there of broken away.

Figure 8 is atran'sverse section, taken on dotted line 8, 8, Fig. 1. Referring to the drawings A represents a cast metal supporting body or block, which is provided with suitable horizontal bearing for a shortshaft or arbor B. This bearing is provided with a packing C which is held in place by a gland D. The ends of shaft 13 project beyond its bearing, hasa pulley E securely mounted thereon by means of whichit is driven.

The side of the supporting block A, opposite pulley E, is provided with a circular cylinder, 6, that is concentric to the axis of shaft B, and the outer annular edge of the open side of this cylinder is flanged circumferentially, and said side of thecylinder is closed by a head, 7, whose marginal edge is" secured to said flange by means of screws 8. The end of the shaft B opposite that on which pulley E is mounted enters suitable bearings in the center of head 7, and between the said head and the bearings in block A, the portion of shaft B in cylinder 6 is surrounded by an annulus 9, consisting of a cylindricalmetal ring. The diameter of this annulus is greater than the diameter of the shaft and it is kept in a given eccentric relation thereto by meansof a coil 'eX pansion spring 10, one end of which is seated in a pocket made in the shaft and the other end of which presses outwards against the inner circumference of the annulus 9,

and thus convert said annulus into a' yieldingcrank pin or eccentric.

If desired the shaft may be perforated in alinement with the axis of spring 10, and

Patented Mar. 7, 1922."

and one end 'a transaxial pin 11, be passed therethrough whose endsare secured in the annulus. This pin insures the annulus rotating with the shaft, but, while we prefer its use it canbe dispensed with.

This annulus has a concentric circular piston 12, mounted thereon, and the boss of this piston frictionally engages but is loose on the outer circumference of said annulus. Piston 12 has a rim 14, the width of which corresponds to the width of cylinder chamber, and the web 13, connecting the boss of thepiston with its rim has, preferably, next to head 7, a concentric channel, 15, surrounding said boss, that opens toward said head 7 This channel is connected by a radially disposed passage, 16, which is preferably open on the side next head 7, to the periphery of the piston. 1

Head 7 has a transverse inlet bore 17, the inner end of which communicates with an annular groove 18, that is made in the inner side of said head and opens into the cylinder chamber and is concentric with shaft B. This groove is of a diameter to constantly register with channel 15.

At a point, preferably immediately to theright of the opening in the circumference of the piston made by passage 16, the rim thereof is provided with a transverse seat, 19, for a transverse vane 20. This seat extends from side to side of the piston. and its ends are open. One of its side walls, 21, separates the seat from passage 16, and the other side wall separates it from and closes the, adj acent end of the channel 15.

The vane 20, consists of a flat transverse plate, of a depth corresponding to the depth of seat 19, and of a width corresponding to the width of the rim. Part of the under edge of the vane extends into the annular space 21, on the side of the web opposite head 7 and betweenthe rim and boss of the piston, and said vane is kept pressed outwards by a spring, 22, preferably consisting of a semi-circular steel wire placed in said annular space 21, andhaving one end engaging and expanding against the inner edge of the vane to keep its outer edge always in engagement with the circumferential walls of the cylinder chamber. I 1

Immediately to the right of the vane the rim is provided with a transversely elongated aperture, 23, for connecting the peripheral space surrounding the piston with theannular space 21 within the same, and this annularspace communicates with and is always open to the discharge opening or outlet 24, leading from the side of the cylinder opposite head 7. r p

1 In operation, the shaft B, andsleeve 9, as seen in Fig. 3, revolve counterclockhandwise, and the piston is held in relatively stationary position. Therefore, the piston has a motion which is clockhandwise relatively. to the sleeve 9 and which is, in effect, a rolling motion on the internal periphery of the cylinder 6. Thus the line of contact between the outer surface of the piston and the inner surface of the cylinder travels in a counterclockhandwise direction. When this line of contact has passed to a position in advance of the passage 16 in the direction of the rotation of the line of contact, there is a gradual reduction of space between said surface in advance of the line of contact and between said line and the vane, in conse- 'quence of which the oil in said space is forced through aperture 23 into the annular space 21, and out through outlet 24. As the line of contact between the two surfaces moves away from the passage 16, there is a tendency tocreate a' vacuum behind said line and between it and the vane, and the oil is sucked into this space from the channel 15 through passage 16, until the line of contact again passes the vane. Thus the space between the piston and the cylinder is being filled on one side of the vane and emptied from the other side thereof, practically all of the time during the operation of the pump.

What we claim as new is:

1. A pump comprising a cylinder; a crank shaft ope-rating in said cylinder; a piston member mounted on said crank shaft in said cylinder having rollin contact with the inner periphery thereof? the said piston being hollow; a vane sliding freely through the periphery of said piston contacting with the inner periphery ofsaid cylinder; and a substantially semi-circular spring located within the interior of said piston and pressing said vane outwardly against the inner periphery of said cylinder, substantially as described.

2. A pump comprising a cylinder; a crank shaft operating in said cylinder coaxially therewith; a cylindrical piston member mounted on said crank shaft in said cylinder, of smaller diameter 7 and having rolling contact with the inner periphery thereof; a spring-held vane sliding freely through the periphery of said piston member and contacting with the inand than said cylinder ner eri her of saidc linder' two se arate P P y 7 P passages formedv in said piston member and having ports con'miunicating through the periphery thereof on opposite sides of said vane; an inlet passing through the walls of said cylinder and communicating with one of said passages; and an outlet passing through the walls of said cylinder and communicating with the other of said passages, substantially as described.

' A pump comprising a cylinder; a crank shaft having a spring-held yieldable crank thereon operating in said cylinder coaxially therewith; a cylindrical piston member mounted on said crankshaft in said cylinder, of smaller diameter thansaid cylinder and having rolling contact with the inner periphery thereof;a spring-held vane sliding freely through the periphery. of said piston member and contacting with the inner periphery of said cylinder; two separate passages formed in said piston member and having ports communicating through the periphery thereof on opposite sides of said vane; an inlet passing throughthe walls of said cylinder and communicating with one through the walls of said cylinder and communicating with the other of said passages, substantially as described.

4. A pump comprising a cylinder having an inlet in one side and an outlet in the opposite side thereof, a non-rotatable circular piston within said cylinder consisting of a rim having apertures therein and a boss of the same width as the cylinder chamber and connected to said rim by an imperforate web; said piston being movable in an orbit eccentric to the axis of said cylinder and having its point of greatest eccentricity always in contact with the inner circumference of the same, and means dividing the peripheral chamber surrounding said piston into a plurality of spaces.

5. A pump comprising a cylinder having an inlet in one side and an outlet in the opposite side thereof, a non-rotatable circular piston within said cylinder consisting of a rim that has apertures therein and a boss of the same width as the cylinder chamber and an imperforate web connecting said boss and rim; said piston movable in an orbit eccentric to the axis of the cylinder and having its point of greatest eccentricity always in contact with the inner circumference of the same, and a radially disposed yielding transverse vane carried in and projecting from the rim of the piston that divides the peripheral chamber surrounding said piston into a plurality of spaces.

6. A pump comprising a cylinder having an inlet in one side and an outlet in the opposite side thereof, a non-rotatable circular piston within the cylinder consisting of a rim having a recess therein and an aperture on each side of said recess, and a boss the same width as the cylinder chamber and an imperforate web connecting said rim and boss; said piston movable in an orbit eccentric to the axis of said cylinder and having its point of greatest eccentricity always in contact with the inner circumference of the same, and a flat radially movable transverse vane in said recess that projects beyond the circumference of said piston and divides the peripheral chamber into two spaces.

7 A pump comprising a cylinder having an inlet in one side and an outlet in the opposite side thereof, a non-rotatable circular piston therein consisting of a rim having apertures and having therein a boss both of the same width as the cylinder chamber, and an imperforate web connecting the rim and boss; said piston movable in an orbit eccentric to the axis of said cylinder and having its point of greatest eccentricity always in contact with the inner circumference of the same, a flat radially movable transverse vane in said recess, which projects beyond the circumference of said piston and divides the peripheral chamber into two spaces, and a spring for pressing said valve toward the outer limit of its movement.

8. A pump comprising a cylinder having an inlet in one side and an outlet in the opposite side thereof, a non-rotatable yielding circular piston therein consisting of a rim having apertures therein and a transverse vane-seat therein, a boss of the same width as the cylinder chamber and an imperforate web connecting said rim and boss; said piston movable in an orbit eccentric to the axis of said cylinder and having its point of greatest eccentricity always in contact with the inner circumferenceof the same, and a flat radially movable vane in said recess that projects beyond the circumference of said piston and divides the peripheral chamber into an intake and an outlet space.

In witness whereof, we have hereunto set our hands this 8th day of July, A. D. 1919.

JOSEPH R. HIGHER. JOHN O. HESSLER.

Witnesses EVA STREIT, PERRY PATTERSON. 

